Mercury manometer (U-tube type) exemplifies a __________ order system.
Options
A. zero
B. first
C. second
D. third
Correct Answer
second
Process Control and Instrumentation problems
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1. Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion?